Radiator cap



E. T. CURRAN RADIATOR CAP Filed July 2. 1921 ab. w. 1925. m5525920 Patented Feb. 10,1925.

AUNITED s'rarlazsy 1,525,920 PATENT OFFICE.

EDWARD T. GURRAN, 0F DETROIT, MICHIGAN.

RADIATOR CAP.

To all 'tv/10m it may concern:

Beit known that I, EDWARD T. CURRAN, a

citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a certain new and useful Radiator Cap, of which the following is a-specification.

This invention relates tov caps mobile radiators and the` invention broadly directed to improve cap construcfor autotion and also the means associated therewith for definitely limiting the extent to which such a cap can be screwed upon .the filler neck of a radiator.

v'Ihefirst phase of' the invention deals with the materials entering into the construction of the cap and the particular shaping of the cap and the second phase ofthe invention deals, broadly, with the positioning of the cap on the filler neck of the radiator so that when the cap is screwed tightly on said neck it will partake of the desired angular position so that radiator thermometers, totems or other ornaments associated with the cap will'be properly positioned. j

If aradiatorthermometer or the-like is rigidly associated with a radiator cap and in a nonadjustable manner, the screwing of .the cap upon the filler neck of a radiator is apt to position the thermometer at such an angle that it cannot be properly read and will appear unsightly.A Accordingly, most devices associated with radiator caps are made adjustable with reference to the cap so that after the cap has been screwed on tightly the thermometer may be adjusted to the proper position. Moreover, most caps are made symmetrical on all sides so that their angular position is of no consequence. The present invention provides a novel form of' cap with means associated therewith for facilitating its positioning on or removing from the radiator and also with means for accurately controlling the extent to which the cap may be screwed down. By these means the angular position of the cap, when tight, may be accurately obtained.

Features of theinvention other than those specified will be apparent from the following specification and claims when read in conjunction with the accompanying claims.

The accompanying drawings illustrate one practical embodiment of the invention, but the construction therein shown, is to be isl 1921. serial No. 482,076.

understood as illustrative, only, and not as defining the limits of the invention.

Figure 1 isa plan view of the cap lembodying the present invention.

\\F1gure 2 is a side elevation of the cap.

Figure 3 is a transverse section of thc line 3:-3 of Figure 2 and, j

Figure 4 shows a perspective view of an adjustable stop employed in conjunction with the cap shown in Figures l, 2, 3.

In constructing the cap of the present invention I preferably cast the same from aluminum, forming the cap proper 1, with laterally projecting arms 2, bv means of which it may be readily manipulated. The under side of the cap is recessed to receive a brass sleeve 3, which is tightly forced into the recess and permanently comes to a seat therein. The interior of the sleeve 3 is screw threaded and the threads thus provided are adapted to screw on to the threaded filler neck of the radiator for the purpose of mounting the cap in position there- 1n. By .casting the cap in aluminum I obtain 'a light and relatively cheap construction which takes a silvery polish and is pleasing in appearance. The brass sleeve forms a support for the threads and imparts the necessary. strength to the construction.

The foregoing combination of metals is preferred although the present invention may be carried out in other metals than those specifically described, and may, if desired, be constructed of a single metal only.

When employing 'a radiator cap with laterally projecting arms as described, it is desirable that when the cap is screwed down tight on the filler neck of the` radiator the arms will extend transversely of the vehicle. However, it is found in practice impossible to practically cut the threads on the interior of the cap in such manner that this positioning of the parts will necessarily follow at all t-imes. -I accordingly associate with the cap means whereby the angularadjustment may be accurately obtained.

In the preferred embodiment of the invention this means may conveniently partake of the form shown in Figure 4 and constitute an adjustable stop. l This stop may Ibe cast, or otherwise constructed but may conveniently be stamped up in sheet meta-l. When it .is made it is in the form of a disk 4, the outer periphery of which is beveled on both sides so as to form a single thread and the disk is made of such size lori ' or ornament thereon.

that it may be screwed into the interior of the sleeve 3, after the manner shown in Figure 3. In order to facilitate this, wings 5V may be stamped up from the disk to aford projections adapted to be used by the iersons 'screwing the disk into the s cove. f desired the disk may be made somewhat thicker thanas shown and lits outer pcripherythreaded with a plurality of threads which are adapted to be screwed into the sleeve 3. If the stop is cast it may be, made appreciably thicker than is shown and any suitable and convenient form of means may be provided to permit it torbe gripped by the operator. Y

In VVemploying the limiting stop of any of' the'forms suggested` it is screwed into the sleeve 3 to substantially the base of the sleeve and left there until such time as the cap is to be screwed on radiator. When the` cap is screwed on to the iiller neck if it'is found to partake of an undesirable angle, it may be removed from the neck and the limiting stop 4 slightly loosened, whereupon the cap'is again tried. If it is found that the angular relation'of the members is not exactly as desired the operations ot adjustment of the stop are repeated until the proper angle is obtained. Thereafter the limiting stop L'lis left in the adjusted position so that each time the cap is screwed o'n to the filler neck it will partake of the desired position. p p

While the adjustable limiting stop of the present invention may be associated with any -radiator cap, it is particularly adapted for use with caps of unsymmetrical shape as well as with caps on which radiator thermometers or other devices are mounted, since. through its employment the angular position of such devices may be accuratelyr regulated. It will be noted that in the accompanyingdrawings I have shown the top of the cap as provided with a depressed threaded socket 6, forming a convenient means for the mounting of a thermometer Such devices may be firmly secured to the cap.' and the limiting stop thereafter adjusted as occasion may require.

Y Having thus fully described `the invention, what I claim as new and desire to se curc by Letters Patent is:

1. An attachment for automobile radiator caps embodying a metallic stop member provided with a peripheral thread adapted to be screwed into the interior of a convention al radiator cap from the under open side thereof and be caused to partake of ditferent positions within the conventional cap to control the extent to which the cap may be screwed onto the filler neck of anassociated radiator.

2. An attachment for automobile radia tor caps embodyingia metallic disc provided with a peripheral thread adapted to Y be. screwed into the interior of a conventional radiator cap and'be caused to partake of diierent positions within the cap tocontrol the exten-t to which vthe cap may be screwed on to the filler neck of an associated radiator, and a finger piece on the under side of said disc to facilitate its manual manipulation.

3. An attachment for automobile radia-` tor caps embodying a sheet metal disc provided with a peripheral thread adapted to be' screwed into the interior of a conventional radiator cap and be caused to partake of different positions Within the cap to control the extent to which the cap may be screwed on to the filler neck oi'V an associated radiator, and atleast one wing lstamped down from the disc to facilitate its manual manipulation.

4. An automobile radiator cap Aprovided with a threaded interior, at least one armprojecting radially from the cap and operating as a handle to facilitate the manipulation of the cap, in combination with the plate stamped up from sheet metal and having a ,threaded periphery, whereby it may be screwed into the threaded interior of the cap, and wins stamped up from the plate to provide finger pieces to permit of the manual manipulation of the plate.

l In testimony whereof I have signed the foregoing specification.

EDWARD 'r'. cURRAN. 

